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California Integrated Water Quality System Project (CIWQS)
   Party At-A-Glance Report

  
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General Information
Party ID Party Name Party Classification Mailing Address Work Phone Email/Website
540164 Angelo Tsakopoulos 7700 College Town Drive 101 Sacramento, CA 95826 None None
  
  
  
  
Expand/Contract Related Places
Related Places
Place ID Place Name County Region Place Type Relationship to Party Relationship Start Date Relationship End Date
Total Related Places: 0
  
  
  
  
Expand/Contract Related Parties
Related Parties
Party ID Party Name Party Type Role/Relationship Relationship Start Date Relationship End Date Classification
542629 Stoneridge Quarry, LLC Organization Legally Responsible Official 06/21/2018 None Privately-Owned Business
540162 Tsakopoulos Investments Organization Legally Responsible Official 05/05/2013 None Privately-Owned Business
544666 EDH 52, GP Organization Legally Responsible Official 12/26/2013 None Privately-Owned Business
Total Related Parties: 3
  
  
  
  
Expand/Contract Regulatory Measures
Regulatory Measures (non-enforcement)
Reg. Measure ID Regulatory Measure Type Region WDID Status Program Order No. RM Effective Date RM Termination Date Relationship Relationship Start Date Relationship End Date Amended?
Total Regulatory Measures: 0
  
  
  
  
Expand/Contract Violations
Violations within the past year
Violation ID Occurrence Date Violation Type Violation Description(+) Violation Status Priority Source Facility Name Violated Reg. Meas. ID Violated Reg. Meas. Order No. Linked to Enf.
Report defaults to display violations within the last year. Click here to see last five years of violations. Refer to the Interactive Violation Report for more data.
Total Violations: 0
*Click the "(+/-) Violation Description" link to expand and contract the violation description.
  
  
  
  
Expand/Contract Enforcement Actions
Enforcement Actions
Enforcement ID Enforcement Type Enf. Order No. Title Program Effective Date Status
Total Enforcement Actions: 0
  
  
  
  
Expand/Contract Enforcement Actions
Regulatory Measures linked to Related Parties
Reg. Measure ID Organization Regulatory Measure Type Program Effective Date Status
394411 EDH 52, GP 401 Certification CERFILLEXC 12/19/2013 Historical
392853 Stoneridge Quarry, LLC 401 Certification CERFILLEXC 04/29/2016 Active
390319 Tsakopoulos Investments 401 Certification CERFILLEXC 03/05/2013 Historical
396690 Tsakopoulos Investments 401 Certification CERFILLEXC 11/14/2014 Historical
Total Regulatory Measures linked to Related Parties: 4
  
  
The current report was generated with data as of: 11/07/2025
Regional Boards are in the process of entering backlogged data.
As a result, data may be incomplete.
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